Filler piece for structural-steel-framework fireproofing



Aug. 19, 1930, .1. A. LARKIN I FILLER PIECE FOR STRUCTURAL STEEL FRAMEWORK FIREPROOFING Filed May 15, 1928 f f 1 l ATTORNEY Patented Aug. 19, 1930 Y i i 1,7735626 l JOHN A. LAR-KIN, OF NEW YORK, N. Y.

- FILLER :PIECE ron STRUCTURAL sum-FRAMEWORK FIREPRooFINor` Application ined May 15, reas. serial No. 278,002.

This invention relates to the iireprooling of hends in combinationY with a molded lirestructural steel framework as applied to proof covering for the vmembers of a strucbuilding construction, and has particulary reftural steel framework, which members deerence to .an improvement in the mode or fine channels therein, of filler elements exmethod of fireproong the framework by entending across the open sides of the channel 5,5

vclosing or encasing the beams, .girders and for excluding the fireproofing material there` *columns with a cementitious or plastic coatfrom. n n .p ing. The invention furthermore contemplates a' In providing the elements ofa structural filler form for use inconnection with girders, in steel framework with a fireproof covering .beams lor horizontal elements which is so L0 such as cement, concrete or other analogous constructed as to permit the molded'firepoured plasticmixtures, it has been the genproofing Vmaterial to form extensions engageral practice heretofore to fill the mixture ing over the upper surfaces ofthe lower in the space defined between the flanges and Vflanges of said members for obtaining the webs of the elements such as the beams, proper anchorageof the material thereto. f e5 girders or columns which are of the conven- Other objects of the invention reside in the tional H-beam, I-beam or channel shape. In simplicity of construction and mode of use view of the fact that the various municipal, of the filler form, the economy with which it State or Federal regulations governing the may be produced and installed andthe genfireproofing of structural steel framework, eral efciency derived therefrom. 70

vrequire the covering of the members with the l/Vith the above recited and other objects fireproof material only to the extent of two .in view, reference is had to the following deinches beyond the surfaces or edges thereof, lscription Y and accompanying drawings, in it is obvious that in addition to the waste of which there isA exhibited one example or emthe fireprooiing material which fills in the bodiment of the invention, while the claims 7V channels defined between the flanges andV definethe actual scope of the same. webs of the members under the present In the drawings: y y f f methods and practices, an unnecessary Figure l is a sectional plan View of a strucamount of steel must be used to support the tural steelv column or vertical member en-V weight of the additional fireproong macased in the improved fireproofing material so v terial which fills in the channels. constructed in accordance with the invention. It is, therefore, the outstanding object of Figure Q'isa transverse vertical sectional the present invention to provide means for viewtherethrough taken approximately onV excluding the fireproofing material from the the line indicated at 2-2 in Figure l. channels without detracting from its pri- Figure 3-is a vertical cross sectional view mary function of protecting the framework through a structural steel column or beam yin event of fire. encased in a fireprooling material constructed I Other objects flowing from the invention in accordancevwith the invention. reside in the provision of an improved mold- Figure 4 is a side elevation of a beam or 40 ed ireproof covering for enclosing structural girder showing the filler form installed. nu steel framework members which effects an igure 5 is a perspective view of one of economy in the amount of fireproofing mathe filler forms used in connection with colterial used, and which therefore reduces the umns or, other vertical members. n weight of the reprooiing material employed, Referring to the drawings by characters of allowing for the reduction of the quantity reference and particularly to F igures'l and un of steel used or the diversion of the same 2, A designates a column or vertical member quantity of steel to an additional use such of a structural steel framework which'is of as the increase in the height to which the the conventional H-shape or I-shape in cross building may be erected. section and which includes a webB and the More specifically, the invention compreflanges C which define a channel or channels 100 D. The fireproof covering l0 in this instance is excluded from the spaces or channels D by means of a filler form 1l of any suitable material such as sheet metal, the liller form being provided with inwardly extending angular flanges l2 which snugly iit the inner faces of the flanges C of the column or member A. In practice, the usual forms E, illustrated in broken lines, are positioned around the column or member A in properly spaced relation thereto, while the liller t'orm or forms 11 are positioned in place, after which the plastic mixture is poured or i'iitr'oduc'ed between the forms E, the filler torni 'l1 and exposed exterior surfaces of the column. Obviously, this excludes the mixture from the spaces or channels D, .the liller form ll ren'iaining permanently in place. The finished covering when'set extendsaround or enc-loses the structural steel framework member and eiectually performs ,its function ot' fn'eproong the same while eliminatingv the unnecessary weight as well as the waste ot the fireprooiing substance which ordinarily enters the channelsD. f

In horizontal framework members such as beams or girders designated at F which are oythe conventional I-beam or channel shape type having a web G and flanges H forming a channel or channels I, the liller form 13 which is employed in this instance has its upper 'angularly extending and inwardly projecting flange la arranged to snugly tit the innensurfa'ce :of the upper flange H or the girder or beam F while the lower flange l5 of the tiller element lis disposed at such an angle astodeine between the girder or beam a space preferably wedge shaped which allows an extending anchoring toe 16 to be termed fromthe ireprooling material 17. rlhis anchoring toe or key when the material sets presents an additional supporting means for the ireprooting material. In practice,in this instance the outer removable forms J are positioned around and properly spaced from the beamer girder Fand the filler element or elementslB, after which the tireproofing mixture is introduced therebetween, as will be clearlyV understood. A

From vthe foregoing, it will thus be seen that a method and means has been ldevised for excluding a iireproof covering from the channels which are defined between the web and flanges of the elements of a structural steel framework, to avoid the waste ot the material and to eliminate the weight of the same which is ordinarilyv occasioned by the lireprooiing material entering the channels under the present methods and practices.

What is claimed is: Y

l. The combination vwith a moulded lireproof covering'mixture for the members of structural steel framework formed with a channel, of a filler plate insertable within the channel for excluding the covering mixture from the channel.

2. The combination with a moulded fireproot' covering enclosing structural steel framework elements having a web and flanges which deline a channel therein, of means for excluding the moulded covering from the channels comprising a channel shaped liller plate inversely arranged in the channel of said member.

3. ln a structural steel framework, the combination with a moulded ireproot1 covering for the horizontal channel shaped members or" the same, of a channel shaped liller form inversely arranged in the channel of 'each member having a lower 'flange extending inwardly and downwardly at an angle whereby said liller form excludes the ireproof covering from the channel except at a point immediately above the lower flange of each member.

`Signed at 1457 Broadway, New York city, in the county of New York and State of New York this 14th day of May, 1928.

JOHN A. LARKIN. 

